Update framework

framework/resonator/effect-chain.js

@@ -0,0 +1,45 @@
+// A chain of effects that connect to the effect bus
+export default class EffectChain {
+    constructor(context, graph, input, output) {
+        this.effects = [];
+        this.context = context;
+        this.graph = graph;
+        this.inputNode = input;
+        this.outputNode = output;
+        this.updateConnections();
+    }
+    applyEffect(effect) {
+        this.effects.push(effect);
+        this.updateConnections();
+    }
+    removeEffect(effect) {
+        this.effects.forEach((currEffect) => {
+            if (effect === currEffect) {
+                currEffect.disconnect();
+            }
+        });
+        this.effects = this.effects.filter((currEffect) => effect !== currEffect);
+        this.updateConnections();
+    }
+    updateConnections() {
+        if (this.effects.length == 0) {
+            this.inputNode.connect(this.outputNode);
+            return;
+        }
+        let current = null;
+        let previous = null;
+        this.effects.forEach((effect) => {
+            current = effect;
+            if (previous) {
+                current.connectInput(previous.getOutput());
+            }
+            else {
+                current.connectInput(this.inputNode);
+            }
+            previous = current;
+        });
+        if (current) {
+            current.connectOutput(this.outputNode);
+        }
+    }
+}